System and method for videoconferencing across networks separated by a firewall
US6633985B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 2003 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Feb 11, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/029
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multimedia firewall adapter supplements a conventional firewall to allow transmission of videoconferencing data (e.g., audio and video data) associated with a protocol, such as the H.323 protocol. The multimedia firewall adapter supplements the conventional firewall so that audio and video data associated with the H.323 protocol are allowed to pass through the multimedia firewall adapter, thus circumventing the conventional firewall. The multimedia firewall adapter receives signals from an intranet and Internet, decomposes the signals, and attempts to authenticate the decomposed signals according to the H.323 protocol. If the decomposed signals are authenticated to contain videoconferencing data, the multimedia firewall adapter negotiates and establishes a connection, and allows the videoconferencing data to pass through. However, if the signal is not authenticated, then the signal is blocked from passing. The blocked signal is redirected to the conventional firewall for analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.